The Parabolic Microphone. | Martin Mitchell's Microphones
Amazon.com: Basinnes Parabolic Microphone Bionic Ear for Long Range Listening Device Up to 200M 8X Magnification Monocular Sound Amplifier, Can Be Used on The Wall : Electronics
Wildtronics LLC | Pro Amplified Mono Parabolic Microphone
Wildtronics LLC | Pro Universal Parabolic Microphone
Wildtronics LLC | All Purpose Parabolic Kit
Parabolic Microphone - Soundshark and Klover Mik 09 Review